Conceptually, what does the alternative hypothesis of a one tailed repeated-measures research study if a treatment is expected to decrease scores on a questionnaire, relative to pre-test scores on a questionnaire? a. Scores will increase after treatment b. There is no decrease in scores after treatment c. Scores will decrease or stay the same after treatment d. Scores will change after treatment e. Scores will increase or stay the same after treatment f. Scores will decrease after treatment

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.